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12200253431 = 50324254977
BaseRepresentation
bin10110101110011000…
…10001011111110111
31011111020221002102012
423113030101133313
5144441231102211
65334341434435
7611222304662
oct132714213767
934436832365
1012200253431
1151a07a7a83
122445a0ba1b
1311c57aa292
1483a4686d9
154b6129d8b
hex2d73117f7

12200253431 has 4 divisors (see below), whose sum is σ = 12224508912. Its totient is φ = 12175997952.

The previous prime is 12200253421. The next prime is 12200253491. The reversal of 12200253431 is 13435200221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12200253431 is a prime.

It is a super-2 number, since 2×122002534312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12200253397 and 12200253406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200253421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12126986 + ... + 12127991.

It is an arithmetic number, because the mean of its divisors is an integer number (3056127228).

Almost surely, 212200253431 is an apocalyptic number.

12200253431 is a deficient number, since it is larger than the sum of its proper divisors (24255481).

12200253431 is an equidigital number, since it uses as much as digits as its factorization.

12200253431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24255480.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 12200253431 its reverse (13435200221), we get a palindrome (25635453652).

The spelling of 12200253431 in words is "twelve billion, two hundred million, two hundred fifty-three thousand, four hundred thirty-one".

Divisors: 1 503 24254977 12200253431